The following table gives the distribution of wages in three branches of a project company Daily wages

No. of workers

K£

BRANCH A

BRANCH B

BRANCH C

10 – 20

6

8

7

20 – 30

12

11

7

30 – 40

15

20

18

40 – 50

10

7

10

50 – 60

7

4

8

i. Point out which of the three branches pays the lowest mean wage. Then compute the combined mean.

ii. Would your decision in (a) above change if the modal wage was used instead.

iii. Suppose you were approached by a new employee to recommend which of the three branches should she choose to work? Based on the most popular measure of dispersion in statistics, give her your recommendation.